Nes Clone Rom Switching
I would like to change some of the games but don't know how to.

So I decided to get an NES clone from a grocery store and I knew most of the games on it would be trash and now I'm wondering if there is a way to change the roms in the clone to different games. The clone that I bought was the MyArcade Data East 308 in 1 Handheld (Amazon Link/Official Store Link.) I've never done anything like this but it would be fun to learn though.